多棱插接式钢管塔风振反应时程分析  

作　　者：董军[1] 贾照远[2] 季克和[1] 毛黎明[1] 

机构地区：[1]南京工业大学新型钢结构研究所,210009 [2]中煤国际工程集团南京设计研究院,210031

出　　处：《特种结构》2006年第3期48-51,共4页Special Structures

基　　金：上海市重点学科开放经费项目"现代建筑钢结构的静动力非线性理论;关键技术研究及产业化";江苏省"青蓝工程"基金项目"新型高效钢结构体系及其应用研究"资助

摘　　要：多棱插接式钢管塔具有制作安装方便、占地面积小等独特优势,正在得到越来越多的应用。但这种结构属于风敏感结构,风振特性是设计必须考虑的关键因素。钢管塔结构为空间薄壁壳体结构,其结构分析设计尤其是风振反应分析与传统的杆系塔架结构有很大的不同。本文用有限元计算得到结构的自振频率和振型,利用振型向量和模拟得到的风荷载向量,通过将动力方程转化为状态空间方程并结合MATLAB程序进行结构的风振时程反应分析,得到了一些有益的结论。Multi-rhombus plug-in steel tube tower has the prominent virtues of ease of construction, less bulk and has been widely used as the primary pole styles for a long time. But the sensitivity to wind and wind-induced character of this kind of structures are the key factors to be considered in design. Steel tube tower is a kind of spatial thin-walled shell structures, its wind-induced vibration responses are quite different from traditional tower. FEM is used to calculate the mode shape and frequency in this paper, on the base of mode shape vector and wind load vector, the dynamic equation is translated into state space equation to study the wind-induced response, some couclusions are also given in this paper.

关 键 词：钢管塔 风振反应 状态空间法 时程分析 

分 类 号：TU347[建筑科学—结构工程]